Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac tuc » cac toc, cac tu, cac tac
tuc van » thuc van, truc van, tuc va
tuan vi » luan vi, quans vi, tuan tai
quan vi » quan li, quan tri, quan doi
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu van cac tuc van ((tuan vi) OR (quan vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu van cac tuc van ((tuan vi) OR (quan vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu van cac tuc van ((tuan vi) OR (quan vi)) cua tre*.